        *{margin: 0;padding: 0;list-style-type: none;}
        a{
            text-decoration: none;
            color: black;
        }
        body{
            background-color: #f5f5f5;
        }
        .utmost{
            width: 2050px;
            margin-left: auto;
            margin-right: auto;
            background-color: #f5f5f54a;
        }
        .column{
            position: relative;
            height: 80px;
            background-color: #ffffff;
        }
        /* logo */
        .column .logo{
            position: absolute;
            height: 80px;
            left: 10%;
            /* border: 1px solid black; */
            cursor: pointer;
            font-family: '海韵';
        }
        .column .logo h2{
            margin-top: 5%;
            font-size: 38px;
        }
        /* 栏目 */
        .column .table{
            position: absolute;
            height: 80px;
            width: 850px;
            /* border: 1px solid black; */
            left: 32%;
        }
        .column .table ul li{
            float: left;
            font-weight: bold;
            font-family: '宋体';
        }
        .column .table ul li:nth-child(1){
            /* border: 1px solid aqua; */
            width: 70px;
            margin-top: 3%;
            margin-left: 2%;
            font-size: 25px;
        }
        .column .table ul li:nth-child(2){
            /* border: 1px solid aqua; */
            width: 120px;
            margin-top: 3%;
            margin-left: 2%;
            font-size: 25px;
        }
        .column .table ul li:nth-child(3){
            /* border: 1px solid aqua; */
            width: 130px;
            margin-top: 3%;
            margin-left: 3%;
            font-size: 25px;
        }
        .column .table ul li:nth-child(4){
            /* border: 1px solid aqua; */
            width: 200px;
            margin-top: 3%;
            margin-left: 3%;
            font-size: 25px;
        }
        .column .table ul li:nth-child(5){
            /* border: 1px solid aqua; */
            width: 135px;
            margin-top: 3%;
            margin-left: 6%;
            font-size: 25px;
        }
        .column .table ul li:nth-child(5) span:nth-child(1){
            font-weight: 100;
            font-size: 20px;
        }
        .column .table ul li:nth-child(5) span:nth-child(2){
            font-weight: 100;
            font-size: 20px;
            display: none;
        }
        .column .table ul li:nth-child(6){
            /* border: 1px solid aqua; */
            width: 170px;
            margin-top: 3%;
            margin-left: 3%;
            font-size: 25px;
        }
        .column .table ul li:hover{
            font-size: 27px;
            transition: .3s;
        }
        .column .table ul li a:hover{
            color: rgba(135, 207, 235, 0.708);
        }
        /* 登录，注册 */
        .column .user{
            position: absolute;
            right: 5%;
            width: 500px;
            top: 28%;
            height: 40px;
            /* border: 1px solid black; */
            cursor: pointer;
        }
        .column .user span{
            font-size: 22px;
            font-family: '宋体';
            padding-left: 4px;
            padding-right: 4px;
        }
        .column .img{
            position: absolute;
            right: 560px;
            top: 18px;
        }
        .column .user input{
            height: 35px;
            width: 200px;
            margin-right: 80px;
            margin-left: 50px;
            font-size: 20px;
        }
        .column .user .login{
            border-right: 1px solid black;
        }
        .column .user .login:hover{
            color: #ccc;
        }
        .column .user .enroll:hover{
            color: #ccc;
        }
        @font-face {
            font-family: "花体";
            src: url('./front/逐浪花体.otf');
        }
        @font-face {
            font-family: "宋体";
            src: url('./front/苏新诗央行体.ttf');
        }